RE: [OpenBIOS] where I'm at with the 440gx and reading nvram

[Wallace I. Kroeker]

Ron,

I am working with the 440BX chipset and have it hobbling along.  
I am having problems with the MDA getting any screen output.
I am able to get beeps out for different keys on the keyboard
but no character display.  (Of course, this could be just the situation to
use Morse code :-).

Do you have any thoughts as to what might be the problem?
Could I get your 440gx chipset and superio components as a reference?

Thanks
Wallace
> -----Original Message-----
> From:	Ronald G. Minnich [SMTP:[e-mail]]
> Sent:	Tuesday, January 25, 2000 10:43 AM
> To:	[e-mail]
> Subject:	RE: [OpenBIOS] where I'm at with the 440gx and reading nvram
>
> I'm actually getting somewhere now via a different path.
>
> I have mmaped 0xffe00000 from /dev/mem and I can see the BIOS. I'm not
> looking at what's in it, but the contents of 0xf0000 and 0xffe00000 do
> match.
>
> This also revealed a bug in the linux do_mmap code: it doesn't correctly
> handle the case of mmap'ing the tail end of memory ...
>
> Now to try to kick the nvram a little. This will require setting a write
> enable bit in the bridge, which I do know is not set normally. No big
> deal. It's still a mystery to me why the darn thing was not visible
> in-kernel, but oh well: I prefer user-mode code for this sort of thing
> anyway.
>
> ron
>
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where I'm at with the 440gx and reading nvram

[James]

> I am working with the 440BX chipset and have it hobbling along.  
> I am having problems with the MDA getting any screen output.
> I am able to get beeps out for different keys on the keyboard
> but no character display.  (Of course, this could be just the situation to
> use Morse code :-).

What is the code to get it to beep?
    - James

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where I'm at with the 440gx and reading nvram

[Ronald G. Minnich]

On Fri, 28 Jan 2000, Wallace I. Kroeker wrote:
> I am working with the 440BX chipset and have it hobbling along.  
> I am having problems with the MDA getting any screen output.
> I am able to get beeps out for different keys on the keyboard
> but no character display.  (Of course, this could be just the situation to
> use Morse code :-).

are you actually getting it to write the BIOS FLASH? what code are you
using to do that?

thanks
ron

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